I think the most interesting thing out of the Red Hat/CentOS/downstream thing was that Red Hat used the absolute classic argument against FOSS - “they’re getting value out of this without contributing back”. The argument that Red Hat themselves spent so long fighting against and building their company around proving that argument wrong.
I think it shows a shift in mind-set, perhaps born from the IBM purchase, perhaps as they start to feel the squeeze, and that they no longer fully believe in FOSS.
But it’s early days, only time will tell - certainly there seems to be a fair few shifts going on at the moment though!